/* JAI-Ext - OpenSource Java Advanced Image Extensions Library
*    http://www.geo-solutions.it/
*    Copyright 2014 GeoSolutions


* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.eclipse.imagen.media;

import java.awt.RenderingHints;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.ContextualRenderedImageFactory;
import java.awt.image.renderable.ParameterBlock;
import org.eclipse.imagen.CRIFImpl;
import org.eclipse.imagen.ImageLayout;
import org.eclipse.imagen.NullOpImage;
import org.eclipse.imagen.OpImage;
import org.eclipse.imagen.media.opimage.RIFUtil;

/**
 * Dummy {@link ContextualRenderedImageFactory} for the "Scale" operation. Internally it calls the "Null" operation.
 *
 * @author Nicola Lagomarsini - GeoSolutions
 */
public class DummyScaleCRIF extends CRIFImpl {

    /** Constructor. */
    public DummyScaleCRIF() {
        super("scale");
    }

    /**
     * Creates a new Image in the rendered layer. This method satisfies the implementation of RIF.
     *
     * @param paramBlock The source image.
     */
    public RenderedImage create(ParameterBlock paramBlock, RenderingHints renderHints) {

        // Get ImageLayout from renderHints if any.
        ImageLayout layout = RIFUtil.getImageLayoutHint(renderHints);
        // Get the source
        RenderedImage source = paramBlock.getRenderedSource(0);
        // returns a new Image
        return new NullOpImage(source, layout, renderHints, OpImage.OP_COMPUTE_BOUND);
    }
}
